Siemens vacuum circuit breaker 38-3AH3 38 kV - Manual (Page 25)

Vacuum interrupter/
operator
Figure 18: Operating mechanism section diagram (drawout trip-free linkage shown) mechanism OPEN, closing spring DISCHARGED
.
62.2
50.3.1
50.3
62.1
62.3
62.5
62.5.1
62.2.2
64.5*
54.1*
62.8*
64.2*
64.3*
63.5*
64.5*
63.0*
48.0* 63.5*
63.7*
63.5*
63.1*
48.0 - Insulating coupler
50.3 - Charging flange
50.3.1 - Driver
53.0 - Close pushbutton
53.1 - Close coil 52SRC
54.0 - Open pushbutton
54.1 - Trip coil 52T
62.1 - Charging shaft
62.2 - Crank
62.2.2 - Closing-spring mounting
62.3 - Cam disc
62.5 - Lever
62.5.1 - Pawl roller
62.5.2 - Close-latch pawl
62.6 - Drive lever
62.8 - Trip-free coupling rod
62.8.1 - Spring return-latch
62.8.2 - Trip-free coupling link (draw bar)
62.8.3 - Trip-free coupling lever
62.8.5 - Push rod and cam assembly
62.8.6 - Interlock lever push rod
62.8.7 - Interlock lever actuator
62.8.8 - Trip-free actuator
63.0 - Jack shaft
63.1 - Lever - phase C
63.5 - Lever - phase B
63.7 - Lever - phase A
64.0 - Opening spring
64.2 - Trip-latch pawl
64.2.1 - Trip-latch pin
64.2.2 - Latching pawl-release lever
64.3 - Lever
64.3.1 - Jack-shaft pawl
64.5 - Opening-spring shaft
* Items moved from position shown in
Figure 20: Operating mechanism section
diagram (drawout trip-free linkage shown)
mechanism CLOSED, closing spring
CHARGED on page 27 on trip operation.
Underlined items moved from position
shown in Figure 17: Operating mechanism
section diagram (drawout trip-free linkage
shown) mechanism OPEN, closing spring
DISCHARGED on page 24 on closed spring
discharge operation.
25